Operation control method of cold roll forming mechanism and cold roll forming mechanism

Abstract

The invention discloses an operation control method of a cold roll forming mechanism and the cold roll forming mechanism, and relates to the technical field of cold roll forming machines.The method comprises the steps that if a first height difference and a second height difference are both within a preset risk difference value range, the first height difference and the second height difference are calculated according to the height values of two bearing rollers, close to each other, of a first bending unit and a second bending unit; calculating to obtain a third height difference; if the third height difference is smaller than the minimum value of the preset risk difference value range, the two current bearing rollers are marked as working rollers, shutdown operation is executed on the other bearing roller of the second bending unit, and the other bearing roller of the first bending unit is marked as an auxiliary roller; the starting and stopping of the working roller are circularly switched according to a first cycle starting and stopping time interval and a second cycle starting and stopping time interval in sequence by taking the moment when the working roller enters the cycle period after the initial period and starts to circulate as the starting moment, and then a finished pipe is machined. Therefore, the processing quality and efficiency are guaranteed.

Description

Technical Field

[0001] The present application generally relates to the technical field of cold-bending forming processing, and specifically relates to an operation control method of a cold-bending forming mechanism and a cold-bending forming mechanism. Background Art

[0002] Roll forming is a process that uses mechanical force to plastically deform metal sheets, pipes, etc. at room temperature. It is widely used in the automotive, aviation, construction, furniture and other industries. It can achieve bending of different angles and shapes through a variety of molds to meet the manufacturing needs of complex parts.

[0003] With the development of industrial automation and intelligence, the demand for cold roll forming mechanisms is growing, which not only requires improving production efficiency, but also requires ensuring the quality and precision of forming, and reducing energy consumption and maintenance costs. However, most of the current cold roll forming mechanisms are used in specific technical links and serve specific products, which makes it difficult to form a standardized production plan when facing large-scale production tasks, and it is impossible to take into account both production efficiency and the smooth execution of auxiliary production tasks. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an operation control method of a cold-bend forming mechanism and a cold-bend forming mechanism that can ensure processing quality and efficiency.

[0005] In a first aspect, the present application provides an operation control method of a cold-bending forming mechanism, which is applied to a cold-bending forming mechanism, wherein the cold-bending forming mechanism comprises: a feeding assembly and a bending assembly; the feeding assembly comprises a positioning unit and a conveying unit, the positioning unit is used to adjust the conveying direction of a pipe group so that the pipe group is input into the conveying unit one by one, each of the pipe groups comprises two pipes to be processed distributed along the conveying direction; the conveying unit is used to transmit the pipes to be processed whose directions have been adjusted; the bending assembly comprises: a first bending unit and a second bending unit arranged along the conveying direction of the feeding assembly, the first bending unit and the second bending unit are both provided with two supporting rollers and a bending structure for use in combination, the two supporting rollers are used to convey and / or receive the pipes to be processed, and the bending structure is used to perform bending operations on the pipes to be processed carried by the first bending unit or the second bending unit that cooperates with it; The method comprises the following steps: When the use time of the first press bending unit reaches a preset working threshold, obtaining a first height difference between two bearing rollers of the first press bending unit and a second height difference between two bearing rollers of the second press bending unit; If the first height difference and the second height difference are both within the preset risk difference range, a third height difference is calculated according to the height values ​​of two mutually adjacent bearing rollers of the first bending unit and the second bending unit; If the third height difference is less than the minimum value of the preset risk difference range, the two bearing rollers close to each other are marked as working rollers, the other bearing roller of the second press bending unit is stopped, and the other bearing roller of the first press bending unit is marked as an auxiliary roller; The time when the next tube group arrives at the discharge end of the conveying unit is taken as the initial time, and the first cycle start-stop time interval and the second cycle start-stop time interval of the working roller in the cycle period are calculated according to the feeding speed of the conveying unit, the pressing time length of the bending structure, the first length of the tube to be processed, the first spacing between two adjacent tube groups, the second spacing between two tubes to be processed in the same tube group, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the equipment length of the first bending unit and the second bending unit and the fourth spacing between the two; the first cycle start-stop time interval is the time period from the first pause of the first tube to be processed in the same tube group to accept the bending process to the second tube to be processed in the same tube group to start to pause and prepare for the bending process; the second cycle start-stop time interval is the sum of the time period of the second tube to be processed in the same tube group to accept the bending process and the transition time period from the end of the bending process of the current tube to be processed to the first tube to be processed in the next tube group to enter the processing preparation stage; The moment when the working roll enters the cycle after the initial cycle and starts the cycle is taken as the starting moment, and the start and stop of the working roll are cyclically switched in accordance with the first cycle start and stop time interval and the second cycle start and stop time interval, so as to process the finished pipe.

[0006] According to the technical solution provided in the present application, calculating the first cycle start-stop time interval and the second cycle start-stop time interval of the working roll within the cycle period specifically includes the following steps: According to the third distance between the discharge end of the conveying unit and the auxiliary roller, the equipment length of the first bending unit, and the fourth distance between the first bending unit and the second bending unit, a first transport distance from the initial moment when the first tube to be processed of the first tube group conveyed by the conveying unit is transferred to the working roller relatively far away from the conveying unit is calculated; Calculating a first start-stop switching duration of the working roll in an initial cycle according to the first transport distance and the feeding speed of the conveying unit; According to the second spacing between two to-be-processed tubes in the same tube group, the first length of the to-be-processed tubes, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the first start-stop switching time, the pressing time of the bending structure and the feeding speed of the conveying unit, a second transport distance of the second to-be-processed tube of the first tube group conveyed by the conveying unit from the end time of the first start-stop switching time to the working roller relatively far away from the conveying unit is calculated; Calculating a second start-stop switching duration of the working roll in the initial cycle according to the feeding speed of the conveying unit and the second transport distance; According to the first spacing between two adjacent tube groups, the first length of the tube to be processed, the second spacing between two tubes to be processed in the same tube group, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the equipment lengths of the first bending unit and the second bending unit and the fourth spacing therebetween, the pressing time of the bending structure, the first start-stop switching time, the second start-stop switching time and the feeding speed of the conveying unit, a third transport distance of the first tube to be processed of the second tube group conveyed by the conveying unit from the end time of the second start-stop switching time to the working roller relatively far away from the conveying unit is calculated; Calculating a third start-stop switching duration of the working roller in the initial cycle according to the third transport distance and the feeding speed of the conveying unit; The second start-stop switching time length is used as the first cycle start-stop time interval of the working roll in the cycle period, and the third start-stop switching time length is used as the second cycle start-stop time interval of the working roll in the cycle period. According to the technical solution provided by this application, the method further includes the following steps: If the first height difference is within the preset risk difference range and the second height difference is less than the minimum value of the preset risk difference range, marking the two bearing rollers of the first bending unit as transmission rollers; The moment when the next tube group arrives at the discharge end of the conveying unit is taken as the initial moment, and the third cycle start-stop time interval and the fourth cycle start-stop time interval of the two bearing rollers of the second press-bending unit in the cycle period are calculated according to the feeding speed of the conveying unit, the pressing time length of the press-bending structure, the first length of the tube to be processed, the first spacing between two adjacent tube groups, the second spacing between two tubes to be processed in the same tube group, the fifth spacing between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment lengths of the first press-bending unit and the second press-bending unit and the fourth spacing therebetween; the third cycle start-stop time interval is when the first height difference is at When the first height difference is within the preset risk difference range and the second height difference is less than the minimum value of the preset risk difference range, the time period from when the first pipe to be processed in the same pipe group stops for the first time to be processed by press bending to when the second pipe to be processed in the same pipe group stops for preparation for press bending; the fourth cycle start-stop time interval is when the first height difference is within the preset risk difference range and the second height difference is less than the minimum value of the preset risk difference range, the time period for when the second pipe to be processed in the same pipe group receives press bending, and the transition time period from when the press bending process for the current pipe to be processed is completed to when the first pipe to be processed in the next pipe group starts to enter the processing preparation stage; The moment when the two load-bearing rollers of the second press bending unit enter the cycle after the initial cycle and start the cycle is taken as the starting moment, and the start and stop of the two load-bending rollers of the second press bending unit are cyclically switched according to the third cycle start and stop time interval and the fourth cycle start and stop time interval, so as to process the finished pipe.

[0007] According to the technical solution provided in the present application, calculating the third cycle start-stop time interval and the fourth cycle start-stop time interval of the two load-bearing rollers of the second press bending unit within the cycle period specifically includes the following steps: A fourth transport distance of the first tube to be processed of the first tube group transported by the transport unit from the initial moment to the bearing roller of the second bending unit relatively far from the transport unit is calculated based on a fifth distance between the discharge end of the transport unit and the transmission roller relatively close to the transport unit, the equipment lengths of the first bending unit and the second bending unit, and a fourth distance between the first bending unit and the second bending unit; According to the fourth transport distance and the feeding speed of the conveying unit, a fourth start-stop switching duration of the two bearing rollers of the second bending unit in the initial cycle is calculated; According to the fifth distance between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment length of the first bending unit and the second bending unit, the fourth distance between the first bending unit and the second bending unit, the second distance between two to-be-processed tubes in the same tube group, the first length of the tube to be processed, the fourth start-stop switching time, the pressing time of the bending structure and the feeding speed of the conveying unit, a fifth transport distance of the second tube to be processed of the first tube group conveyed by the conveying unit from the end time of the fourth start-stop switching time to the bearing roller of the second bending unit relatively far away from the conveying unit is calculated; According to the fifth transport distance and the feeding speed of the conveying unit, a fifth start-stop switching duration of the two bearing rollers of the second bending unit in the initial cycle is calculated; According to the fifth distance between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment length of the first bending unit and the second bending unit, the fourth distance between the first bending unit and the second bending unit, the second distance between two to-be-processed pipes in the same pipe group, the first length of the to-be-processed pipes, the fourth start-stop switching time, the fifth start-stop switching time, the pressing time of the bending structure and the feeding speed of the conveying unit, a sixth transport distance of the first to-be-processed pipe of the second pipe group conveyed by the conveying unit to the bearing roller relatively far away from the conveying unit is calculated; According to the sixth transport distance and the feeding speed of the conveying unit, a sixth start-stop switching duration of the two bearing rollers of the second bending unit in the initial cycle is calculated; The fifth start-stop switching duration is used as the third cyclic start-stop time interval of the two load-bearing rollers of the second press bending unit within the cycle period, and the sixth start-stop switching duration is used as the fourth cyclic start-stop time interval of the two load-bending rollers of the second press bending unit within the cycle period.

[0008] According to the technical solution provided by this application, the method further includes the following steps: When the first height difference is smaller than the minimum value of the preset risk difference range and the second height difference is larger than the minimum value of the preset risk difference range, the cyclic start and stop time interval of the first press bending unit is adjusted so that it performs a press bending operation on the pipe to be processed, and at the same time the second press bending unit is controlled to shut down and overhaul.

[0009] According to the technical solution provided by this application, the method further includes the following steps: When the first height difference is greater than the maximum value of the preset risk difference range, or when the first height difference is within the preset risk difference range and the second height difference is greater than the maximum value of the preset risk difference range, the first press bending unit and the second press bending unit are controlled to shut down and overhaul at the same time.

[0010] According to the technical solution provided by this application, the method further includes the following steps: transporting the finished pipe to a testing area for testing; If the finished pipe passes the standard inspection structure of the inspection area, the current finished pipe is determined to be a qualified product and is pushed to the first storage area; if the finished pipe is intercepted by the standard inspection structure of the inspection area, the current finished pipe is determined to be an unqualified product and is pushed to the second storage area.

[0011] In a second aspect, the present application provides a roll forming mechanism for implementing the above-mentioned operation control method of the roll forming mechanism, the mechanism comprising: A feeding assembly, the feeding assembly includes a positioning unit and a conveying unit, the positioning unit is used to adjust the conveying direction of the pipe group so that the pipe groups are input into the conveying unit one by one, each of the pipe groups includes two pipes to be processed distributed along the conveying direction; the conveying unit is used to transfer the pipes to be processed with the adjusted direction; A bending assembly, the bending assembly comprising: a first bending unit and a second bending unit arranged along the conveying direction of the feeding assembly, the first bending unit and the second bending unit each having two supporting rollers and a bending structure for use in conjunction with each other, the two supporting rollers being used to convey and / or receive the pipe to be processed, the bending structure being used to perform a bending operation on the pipe to be processed carried by the first bending unit or the second bending unit in conjunction with the first bending unit; A control unit is communicatively connected with the feeding assembly and the bending assembly, and is used to control corresponding assemblies to perform corresponding actions.

[0012] According to the technical solution provided in this application, the mechanism further includes: a standard detection structure arranged in the detection area; The standard detection structure includes: A detection body, wherein the detection body is hollow inside to form a bearing chamber, the bearing chamber is connected to the first storage area, and the detection body and the second storage area are arranged adjacent to each other; an opening is arranged on the top of the detection body, and the opening is used to install standard detection frames of different specifications; a protective pad is arranged at the bottom of the bearing chamber to receive finished pipes judged to be qualified products; A first pushing unit, the first pushing unit is arranged in the bearing chamber; the first pushing unit has a first pushing portion, which is used to send the finished pipes judged as qualified products into the first storage area; The second pushing unit is arranged at the top of the detection body and adjacent to the opening; the second pushing unit has a second pushing portion for sending the finished pipes judged as unqualified products into the second storage area.

[0013] According to the technical solution provided in this application, the bending structure includes: A mounting base, wherein the mounting base is provided with a first bending member, a second bending member and a third bending member which are evenly distributed, wherein the bending angle of the first bending member is greater than the bending angle of the second bending member, and the bending angle of the second bending member is greater than the bending angle of the third bending member; The first bending member is provided with a first groove, and a first auxiliary member is rotatably connected in the first groove, and the bending angle of the first auxiliary member is the same as the bending angle of the second bending member; The second bending member is provided with a second groove, and a second auxiliary member is rotatably connected in the second groove, and the bending angle of the second auxiliary member is the same as the bending angle of the third bending member; The target bending angle is formed by splicing the bending parts and auxiliary parts with the same bending angle, so that the bending structure can perform bending operations on the pipes to be processed with different angle requirements.

[0014] It can be seen from the above technical solution that the present application has at least the following beneficial effects: The present application provides an operation control method for a cold bending forming mechanism, which includes: on the premise that the use time of the first bending unit reaches a preset working threshold, it is judged that the first height difference between the two bearing rollers of the first bending unit and the second height difference between the two bearing rollers of the second bending unit are both within a preset risk difference range, then a third height difference is calculated according to the height values ​​of the two bearing rollers of the first bending unit and the second bending unit that are close to each other. If the third height difference is less than the minimum value of the preset risk difference range, it means that the wear degrees of the two are similar and can meet the accuracy requirements. At this time, the current two bearing rollers are marked as working rollers, and the other bearing roller of the second bending unit is shut down and the other bearing roller of the first bending unit is marked as an auxiliary roller; then the time when the next pipe group arrives at the discharge end of the conveying unit is taken as the initial time, according to the feeding speed of the conveying unit, the pressing time of the bending structure, the first length of the pipe to be processed, the first spacing between the two adjacent pipe groups, and the two pipes to be processed in the same pipe group. The first cycle start-stop time interval and the second cycle start-stop time interval of the working roller in the cycle period are calculated based on the second spacing between the pipes, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the equipment length of the first bending unit and the second bending unit, and the fourth spacing between the two; the first cycle start-stop time interval is the time period from the first pause of the first pipe to be processed in the same pipe group to accept the bending process to the second pipe to be processed in the same pipe group starting to pause and prepare for the bending process; the second cycle start-stop time interval is the time period when the second pipe to be processed in the same pipe group accepts the bending process and the transition time period from the end of the bending process on the current pipe to be processed to the first pipe to be processed in the next pipe group starting to enter the processing preparation stage; the moment when the working roller enters the cycle period after the initial cycle is taken as the starting moment, and the start and stop of the working roller are cyclically switched according to the first cycle start-stop time interval and the second cycle start-stop time interval, so as to process the finished pipe. It not only avoids pipe backlogs and jams caused by uncoordinated start and stop, but also eliminates unnecessary waiting time, achieving seamless connection of the processing process, which can greatly increase the output of finished pipes per unit time and significantly improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0016] Figure 1 The present invention is a flow chart of the operation control method of the cold-bending forming mechanism.

[0017] Figure 2 A flow chart for determining a first cycle start-stop time interval and a second cycle start-stop time interval.

[0018] Figure 3 It is a schematic diagram of the front view of the cold-bending forming mechanism.

[0019] Figure 4 It is a schematic diagram of the top view of the cold-bend forming mechanism.

[0020] Figure 5 Schematic diagram of the standard detection structure.

[0021] Figure 6 It is a structural schematic diagram of the compression bending structure.

[0022] Figure 7 A schematic diagram of the transport of pipes to be processed.

[0023] Numbers in the figure: 1. Feeding assembly; 2. Positioning unit; 3. Conveying unit; 4. Pipe to be processed; 5. Bending assembly; 6. First bending unit; 7. Second bending unit; 8. Load-bending roller; 9. Bending structure; 10. Control unit; 11. Detection area; 12. Detection body; 13. Standard detection frame; 14. Protection pad; 15. First auxiliary part; 16. Second auxiliary part; 17. First storage area; 18. Second storage area; 19. Mounting base; 20. First bending part; 21. Second bending part; 22. Third bending part. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to make the technical solution of the present application clearer and easier to understand, the system of the present application is first introduced below. Figure 3 and Figure 4 As shown, this figure is a schematic diagram of the structure of the cold-bending forming mechanism provided in an embodiment of the present application. The mechanism includes: The feeding assembly 1 includes a positioning unit 2 and a conveying unit 3. The positioning unit 2 is used to adjust the conveying direction of the pipe group so that the pipe groups are input into the conveying unit 3 one by one. Each pipe group includes two pipes 4 to be processed distributed along the conveying direction. The conveying unit 3 is used to transfer the pipes 4 to be processed whose directions have been adjusted. The bending assembly 5 includes: a first bending unit 6 and a second bending unit 7 arranged along the conveying direction of the feeding assembly 1, the first bending unit 6 and the second bending unit 7 are both provided with two supporting rollers 8 and a bending structure 9 for use together, the two supporting rollers 8 are used to convey and / or bear the pipe material 4 to be processed, and the bending structure 9 is used to perform a bending operation on the pipe material 4 to be processed carried by the first bending unit 6 or the second bending unit 7 that cooperates with it; The control unit 10 is in communication with the feeding assembly 1 and the bending assembly 5, and is used to control the corresponding components to perform corresponding actions.

[0027] It should be noted that the feeding assembly 1 includes a positioning unit 2 and a conveying unit 3. The positioning unit 2 stores a plurality of pipe groups in batches, and each pipe group has two pipes 4 to be processed. A conveying channel is provided at a position of the positioning unit 2 close to the conveying unit 3, and a roller conveying structure is provided in the positioning unit 2, which is used to send the pipe groups to the conveying channel one by one. A guide plate is provided at one end of the conveying channel away from the conveying unit 3, and the guide plate can swing relative to the conveying channel, which is used to adjust the relative position of the pipe 4 to be processed, so that the pipe 4 to be processed can smoothly enter the conveying channel, and thus accurately be sent to the conveying unit 3. Here, the conveying unit 3 includes two transmission shafts and a driving motor connected to one of the transmission shafts. A conveyor belt is provided between the two transmission shafts. After the driving motor is started, it can drive the transmission shaft and the conveyor belt to rotate, so as to transport the pipe 4 to be processed thereon to the bending assembly 5. In addition, in order to ensure the orderly processing flow, the spacing between the two pipes 4 to be processed in each pipe group and the spacing between adjacent pipe groups are set in advance.

[0028] The bending assembly 5 includes a first bending unit 6 and a second bending unit 7 arranged along the conveying direction of the feeding assembly 1. The two bending units have the same configuration, and both include two supporting rollers 8 and a bending structure 9 for use together. The supporting rollers 8 are responsible for conveying the pipe 4 to be processed so that the pipe 4 to be processed can move in the bending unit, and can also provide support for the pipe 4 to be processed, so as to ensure that the bending structure 9 can stably perform bending operations on the pipe 4 to be processed. In addition, each supporting roller 8 is provided with a wear-resistant part, such as a rubber pad, to prevent the supporting roller 8 from causing wear to the pipe 4 to be processed.

[0029] Furthermore, the cold bending forming mechanism also includes a support frame, which is arranged above the first bending unit 6 and the second bending unit 7. The two bending structures 9 are slidably connected to the support frame. When the two bending units are able to perform normal bending operations, the two bending structures 9 are respectively located above their corresponding two bearing rollers 8. If two bearing rollers 8 close to each other of two sets of bending units need to be used in coordination, one bending structure 9 is moved along the support frame to the top of the two bearing rollers 8 to achieve the bending purpose. In addition, when the bending structure 9 moves to the desired position, a fixing bolt can be used to penetrate the support frame and abut against the surface of the bending structure 9 to limit the relative position between the bending structure 9 and the support frame.

[0030] The control unit 10 is, for example, an electric control cabinet, which is communicated with the feeding component 1 and the press-bending component 5, and is used to issue corresponding instructions to the feeding component 1 and the press-bending component 5, accurately control each component to perform corresponding actions, and ensure that the entire cold-bending forming mechanism can efficiently, stably and accurately complete the cold-bending forming processing task of the pipe 4 to be processed.

[0031] Furthermore, if Figure 5 As shown, the mechanism also includes: a standard detection structure arranged in the detection area 11; Standard test structures include: The detection body 12 is hollow inside to form a bearing chamber, the bearing chamber is connected to the first storage area 17, and the detection body 12 and the second storage area 18 are arranged adjacent to each other; the top of the detection body 12 is provided with an opening, and the opening is used to install standard detection frames 13 of different specifications; the bottom of the bearing chamber is provided with a protective pad 14, which is used to receive the finished pipes judged to be qualified products; A first pushing unit, which is arranged in the bearing chamber; the first pushing unit has a first pushing portion, which is used to send the finished pipes judged as qualified products into the first storage area 17; The second pushing unit is arranged at the top of the detection body 12 and adjacent to the opening; the second pushing unit has a second pushing portion for sending the finished pipes determined to be unqualified products into the second storage area 18.

[0032] It should be noted that the interior of the detection body 12 is hollow, forming a load-bearing chamber, which is connected to the first storage area 17, so that qualified products can be pushed to the corresponding storage area later; at the same time, it is arranged adjacent to the second storage area 18, so that unqualified products can be stored conveniently. In addition, an opening is provided on the top of the detection body 12, which can be installed with standard detection frames 13 of different specifications, so that the adapted detection frames can be flexibly replaced according to the detection requirements of finished pipes of different specifications in actual production. A protective pad 14 is also provided at the bottom of the load-bearing chamber, which plays a buffering and protective role for the finished pipes judged as qualified products, prevents the qualified finished pipes from being damaged due to collisions, etc., and ensures that the quality of the finished pipes is not additionally affected.

[0033] The first pushing unit includes a driving cylinder and a first pushing plate installed at the end of its driving shaft. The surface of the first pushing plate away from the driving cylinder forms a first pushing portion. When the finished pipe material that is determined to be a qualified product after being detected by the standard detection frame 13 falls into the interior of the bearing chamber, the control unit 10 sends a working instruction to the first pushing unit, and the first pushing unit operates and pushes the qualified finished pipe material into the first storage area 17. Similarly, the specific structural composition of the second pushing unit is the same as that of the first pushing unit, which will not be described here. The difference between the two is that the second pushing unit is used to push unqualified finished pipe materials.

[0034] Furthermore, if Figure 6 As shown, the bending structure 9 includes: A mounting base 19 is provided with a first bending member 20, a second bending member 21 and a third bending member 22 which are evenly distributed. The bending angle of the first bending member 20 is greater than the bending angle of the second bending member 21, and the bending angle of the second bending member 21 is greater than the bending angle of the third bending member 22; The first bending member 20 is provided with a first groove, and the first auxiliary member 15 is rotatably connected in the first groove. The bending angle of the first auxiliary member 15 is the same as that of the second bending member 21. The second bending member 21 is provided with a second groove, and the second auxiliary member 16 is rotatably connected in the second groove. The bending angle of the second auxiliary member 16 is the same as that of the third bending member 22. The target bending angle is formed by splicing the bending parts and auxiliary parts with the same bending angle, so that the bending structure 9 can perform bending operations on the pipes 4 to be processed with different angle requirements.

[0035] It should be noted that the first bending member 20, the second bending member 21 and the third bending member 22 are all fan-shaped structures, and the corresponding bending angle refers to the arc angle of each fan-shaped structure. The notch of the first groove on the first bending member 20 faces the second bending member 21. When the second bending member 21 and the first auxiliary member 15 need to be spliced ​​together, the first auxiliary member 15 can be quickly moved from the first groove to one side of the second bending member 21, and then the two are connected with fixing bolts to form a new bending angle, so that it can be suitable for processing pipes of corresponding specifications; similarly, the second auxiliary member 16 and the third bending member 22 can also be spliced ​​to a new bending angle to process corresponding pipes.

[0036] Here, the thickness difference between the press-bending parts and the auxiliary parts that can be spliced ​​and used is within the preset deviation range, which will not affect the normal processing accuracy of the pipe. The preset deviation range is set according to actual needs.

[0037] like Figure 1 As shown, the present application provides an operation control method of a cold-bending forming mechanism, the method comprising the following steps: S100: When the use time of the first press bending unit reaches a preset working threshold, a first height difference between two bearing rollers of the first press bending unit and a second height difference between two bearing rollers of the second press bending unit are obtained.

[0038] It should be noted that the preset working threshold can be set based on the service life of the two load-bearing rollers of the press bending unit.

[0039] The first height difference refers to the comparison of the heights of the two bearing rollers measured when the lowest points of the surfaces of the two bearing rollers of the first bending unit are at the maximum height of the bearing rollers from the ground, and the difference is the first height difference. Similarly, the second height difference refers to the comparison of the heights of the two bearing rollers measured when the lowest points of the surfaces of the two bearing rollers of the second bending unit are at the maximum height of the bearing rollers from the ground, and the difference is the second height difference. Here, the height of the bearing rollers can be measured by a laser rangefinder.

[0040] The height difference of the load-bearing rollers belonging to the same bending unit can reflect the relative position relationship between the load-bearing rollers and the existing wear, deformation, etc.

[0041] S200: If the first height difference and the second height difference are both within the preset risk difference range, a third height difference is calculated based on the height values ​​of two mutually adjacent bearing rollers of the first bending unit and the second bending unit.

[0042] It should be noted that the preset risk difference range can be set according to actual conditions. When the first height difference and the second height difference are both within the preset risk difference range, it means that the relative position deviation of the bearing rollers of the two bending units is within an acceptable limit, and then the third height difference is calculated based on the height values ​​of the two bearing rollers of the first bending unit and the second bending unit that are close to each other, and the third height difference is compared with the preset risk difference range to determine whether the two bearing rollers meet the processing requirements.

[0043] If the third height difference is greater than or equal to the minimum value of the preset risk difference range, it means that the two bearing rollers are not capable of processing the pipes that meet the requirements, and the first bending unit and the second bending unit can be shut down and repaired. Otherwise, execute step S300.

[0044] S300. If the third height difference is less than the minimum value of the preset risk difference range, the two load-bearing rollers close to each other are marked as working rollers, the other load-bearing roller of the second press bending unit is shut down, and the other load-bearing roller of the first press bending unit is marked as an auxiliary roller.

[0045] It should be noted that if the third height difference is less than the minimum value of the preset risk difference range, it means that the heights of the two adjacent bearing rollers match and are suitable as working rollers directly involved in pipe processing. That is, the two current bearing rollers can be marked as working rollers at this time. Correspondingly, for the other bearing roller of the second bending unit, since it is temporarily not involved in the subsequent processing, it is necessary to perform a shutdown operation on it; and the other bearing roller of the first bending unit is marked as an auxiliary roller, and the role of the auxiliary roller is to assist the conveying unit in transferring the pipe to be processed to the two working rollers during the entire operation control process.

[0046] S400, taking the time when the next tube group arrives at the discharge end of the conveying unit as the initial time, and calculating the first cycle start-stop time interval and the second cycle start-stop time interval of the working roller in the cycle period according to the feeding speed of the conveying unit, the pressing time length of the bending structure, the first length of the tube to be processed, the first spacing between two adjacent tube groups, the second spacing between two tubes to be processed in the same tube group, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the equipment length of the first bending unit and the second bending unit, and the fourth spacing between the two. The first cycle start-stop time interval is the time period from the first tube to be processed in the same tube group to the first pause for bending processing to the second tube to be processed in the same tube group to start pausing for bending processing; the second cycle start-stop time interval is the sum of the time period when the second tube to be processed in the same tube group is bent and the transition time period from the end of bending processing on the current tube to be processed to the first tube to be processed in the next tube group to enter the processing preparation stage.

[0047] It should be noted that the feeding speed of the conveying unit refers to the rotation speed of its roller, which is equal to the rotation speed of the bearing roller of the first bending unit and the rotation speed of the bearing roller of the second bending unit. The feeding speed of the conveying unit is used to determine how fast the pipe enters the bending mechanism; the pressing time of the bending structure refers to the time that the pipe to be processed located on the two supporting rollers used in conjunction is subjected to the bending action during the bending process; the first length of the pipe to be processed is the length of the pipe itself; the first spacing between two adjacent pipe groups refers to the spacing between the tail end of the second pipe to be processed in the first pipe group and the head end of the first pipe to be processed in the second pipe group, and the second spacing between two pipes to be processed in the same pipe group refers to the spacing between the tail end of the first pipe to be processed in the same pipe group and the head end of the second pipe to be processed; the third spacing between the discharge end of the conveying unit and the auxiliary roller refers to the spacing between the discharge end of the conveying unit and the nearest point of the auxiliary roller to it; the equipment length of the first bending unit is the length of the equipment itself, the equipment length of the second bending unit is the length of the equipment itself, and the fourth spacing refers to the minimum spacing between two supporting rollers close to each other of the first bending unit and the second bending unit.

[0048] When the first height difference and the second height difference are both within the preset risk difference range, the two adjacent bearing rollers of the first bending unit and the second bending unit have the ability to be used in coordination, but the current two bearing rollers do not meet the conditions for coordinated use according to the initial start-stop action, so they need to be adjusted within a time period. The time period here is the initial period, that is, the adjustment period that allows the two adjacent bearing rollers of the first bending unit and the second bending unit to achieve synchronous start and stop.

[0049] The cycle period refers to the period of cyclic processing of the pipe to be processed after the two working rolls have been adjusted to the synchronous start and stop state. One cycle period is the time it takes for two working rolls to complete the processing of two pipes to be processed in the same pipe group.

[0050] S500, taking the time when the working roll enters the cycle cycle after the initial cycle as the starting time, switching the start and stop of the working roll in a cycle according to the first cycle start and stop time interval and the second cycle start and stop time interval, and then processing the finished pipe.

[0051] It should be noted that the first start-stop information carrying the first cycle start-stop time interval and the second cycle start-stop time interval is sent to the two working rollers, so that the working rollers can take the moment when the working rollers enter the cycle after the initial cycle as the starting moment according to the received information. When the first pipe to be processed in the same pipe group is received, the start-stop action is performed according to the first cycle start-stop time interval. When the second pipe to be processed in the same pipe group is received, the start-stop action is performed according to the second cycle start-stop time interval, so that the pipe to be processed can be accurately processed into a finished pipe according to the predetermined process requirements when passing through the press bending unit, so as to ensure that the quality and size of the product meet the production standards.

[0052] The present application realizes efficient, stable and high-quality production of the pipe cold bending process by monitoring the status of each bending unit and coordinating and controlling based on multiple parameters.

[0053] Furthermore, if Figure 2 and Figure 7 As shown, calculating the first cycle start-stop time interval and the second cycle start-stop time interval of the working roll within the cycle period specifically includes the following steps: S401, based on the third distance between the discharge end of the conveying unit and the auxiliary roller, the equipment length of the first press bending unit, and the fourth distance between the first press bending unit and the second press bending unit, calculate the first transport distance from the initial moment when the first pipe to be processed of the first pipe group conveyed by the conveying unit is transferred to the working roller relatively far away from the conveying unit.

[0054] It should be noted that the third distance between the discharge end of the conveying unit and the auxiliary roller is used to characterize the transition distance from the pipe to be processed to the auxiliary roller after it is discharged from the conveying unit; the equipment length of the first press bending unit is used to characterize the maximum distance between the two load-bearing rollers in the press bending unit, which is also the travel distance of the pipe to be processed on the unit; the fourth distance between the first press bending unit and the second press bending unit is used to characterize the travel distance of the pipe to be processed when it is transported to the two working rollers.

[0055] The first transportation distance mentioned above can be calculated according to the following formula: ; in, is the first transport distance, is the third spacing, is the equipment length of the first bending unit, The fourth spacing.

[0056] That is, the first transport distance is the distance traveled by the first pipe to be processed of the first pipe group transported by the transport unit from the initial moment, starting from the discharge end of the transport unit, passing through a series of positions and reaching the working roller relatively far away from the transport unit.

[0057] S402: Calculate a first start-stop switching duration of the working roll in an initial cycle according to the first transportation distance and the feeding speed of the conveying unit.

[0058] It should be noted that the feeding speed is equivalent to the traveling speed of the pipe to be processed. The first transportation distance is divided by the feeding speed to obtain the time it takes for the first pipe to be processed in the first pipe group transmitted by the conveying unit to arrive at the working roller, that is, the first start-stop switching duration.

[0059] The first start-stop switching duration can be calculated according to the following formula: ; in, is the first start-stop switching duration, is the first transport distance, is the feeding speed of the conveying unit, is the initial moment, The end time of the first start-stop switching duration.

[0060] That is, the first start-stop switching time is the time required for the first pipe to be processed in the first pipe group to reach the working roller relatively far away from the conveying unit when the first pipe moves at the feeding speed.

[0061] S403, based on the second spacing between two pipes to be processed in the same pipe group, the first length of the pipe to be processed, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the first start-stop switching time, the downward pressing time of the bending structure and the feeding speed of the conveying unit, calculate the second transportation distance of the second pipe to be processed in the first pipe group conveyed by the conveying unit from the end time of the first start-stop switching time to the working roller relatively far away from the conveying unit.

[0062] The second transport distance mentioned above can be calculated according to the following formula: ;in, ; Here, is the second transport distance, is the distance from the head end of the second pipe to be processed in the first pipe group to the working roller relatively far away from the conveying unit from the initial moment, is the first start-stop switching duration, is the pressing time of the bending structure, is the feeding speed of the conveying unit, is the third spacing, is the second spacing, is the length of the pipe to be processed, is the fourth spacing, is the equipment length of the first press bending unit.

[0063] When the second pipe to be processed starts to move, the first pipe has already experienced the first start-stop switching time and the downward pressing time of the bending structure. During this period, the conveying unit is still running at the feeding speed, so the second pipe to be processed will have a distance change relative to the starting position of the first pipe to be processed. It indicates the distance traveled by the conveyor unit at the feeding speed during the total time of the first start-stop switching time and the bending structure pressing time. The second pipe to be processed does not need to repeat the distance traveled by the first pipe during the first start-stop switching time and the pressing time, so it is necessary to start from Subtract this part from the total distance to accurately calculate the transportation distance of the second pipe to be processed, that is, the second transportation distance.

[0064] S404, calculating the second start-stop switching duration of the working roll in the initial cycle according to the feeding speed of the conveying unit and the second transport distance.

[0065] It should be noted that the second start-stop switching time refers to the time required for the second pipe to be processed in the first pipe group to reach the working roller relatively far away from the conveying unit when the second pipe to be processed moves at the feeding speed.

[0066] The second start-stop switching duration can be calculated according to the following formula: ; in, is the second start-stop switching duration, is the second transport distance, is the feeding speed of the conveying unit.

[0067] S405. According to the first spacing between two adjacent pipe groups, the first length of the pipe to be processed, the second spacing between two pipes to be processed in the same pipe group, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the equipment lengths of the first press bending unit and the second press bending unit and the fourth spacing between the two, the pressing time of the press bending structure, the first start-stop switching time, the second start-stop switching time and the feeding speed of the conveying unit, calculate the third transportation distance of the first pipe to be processed of the second pipe group conveyed by the conveying unit from the end time of the second start-stop switching time to the working roller relatively far away from the conveying unit.

[0068] The third transport distance mentioned above can be calculated according to the following formula: ; Here, ; in, is the third transport distance, is the distance from the head end of the first pipe to be processed in the second pipe group to the working roller relatively far away from the conveying unit, is the first spacing between two adjacent tube groups, is the length of the pipe to be processed.

[0069] When calculating the transportation distance of the first pipe to be processed in the second pipe group, it is necessary to consider the start-stop switching time and the bending time in the previous pipe processing process. Because in the processing of the previous pipe, the first start-stop switching time, the second start-stop switching time and the downward pressure time of the bending structure have been experienced. During these times, the conveying unit is still running at the feeding speed, so the first pipe to be processed in the second pipe group will have a distance change relative to the starting position of the previous pipe. It indicates the distance traveled by the pipe to be processed at the feeding speed during the total start-stop switching time and pressing time in the previous pipe processing process. Because the first pipe to be processed in the second pipe group does not need to repeat the distance traveled by the previous pipe during the start-stop switching time and pressing time, it is necessary to start from Subtract this part from the total to accurately calculate its transportation distance, that is, the third transportation distance.

[0070] S406. Calculate a third start-stop switching duration of the working roll in the initial cycle according to the third transport distance and the feeding speed of the conveying unit.

[0071] It should be noted that the third start-stop switching time indicates the time required for the first pipe to be processed of the second pipe group to reach the working roller relatively far away from the conveying unit when the first pipe to be processed moves at the feeding speed.

[0072] The third start-stop switching duration mentioned above can be calculated according to the following formula: ; in, It is the third start-stop switching duration.

[0073] S407, using the second start-stop switching duration as the first cyclic start-stop time interval of the working roll in the cycle period, and using the third start-stop switching duration as the second cyclic start-stop time interval of the working roll in the cycle period.

[0074] It should be noted that the second start-stop switching duration is used as the first cycle start-stop time interval of the working roller in the cycle period, that is, this time period includes the entire process from the first pause for the first pipe to be processed in the first pipe group to be processed to the second pipe to be processed starting to pause and prepare for processing, which is defined as the first cycle start-stop time interval, which can accurately reflect the time rhythm of equipment operation control during the processing of the first pipe to be processed in the same group. Similarly, the third start-stop switching duration is used as the second cycle start-stop time interval of the working roller in the cycle period, which includes the key period of processing the second pipe to be processed and transitioning to the processing of a new group of pipes to be processed, recorded as the second cycle start-stop time interval. These two cycle start-stop time intervals accurately regulate the processing rhythm of the pipe in the cold bending process from the time dimension, ensuring that the entire processing process is carried out efficiently and accurately according to the predetermined process requirements, and ultimately ensuring the quality and production efficiency of the finished pipe.

[0075] Furthermore, the method further comprises the following steps: If the first height difference is within the preset risk difference range and the second height difference is less than the minimum value of the preset risk difference range, marking the two bearing rollers of the first bending unit as transmission rollers; The moment when the next tube group arrives at the discharge end of the conveying unit is taken as the initial moment, and the third cycle start-stop time interval and the fourth cycle start-stop time interval of the two bearing rollers of the second bending unit in the cycle period are calculated according to the feeding speed of the conveying unit, the pressing time length of the bending structure, the first length of the tube to be processed, the first spacing between two adjacent tube groups, the second spacing between two tubes to be processed in the same tube group, the fifth spacing between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment length of the first bending unit and the second bending unit and the fourth spacing between the two. The third cycle start-stop time interval is when the first height difference is at a preset When the first height difference is within the risk difference range and the second height difference is less than the preset minimum value of the risk difference range, the time period from when the first pipe to be processed in the same pipe group stops for the first time to accept the press bending process to when the second pipe to be processed in the same pipe group starts to stop for preparation for the press bending process; the fourth cycle start-stop time interval is when the first height difference is within the preset risk difference range and the second height difference is less than the preset minimum value of the risk difference range, the time period for the second pipe to be processed in the same pipe group to accept the press bending process, and the transition time period from when the press bending process for the current pipe to be processed is completed to when the first pipe to be processed in the next pipe group starts to enter the processing preparation stage; The moment when the two load-bearing rollers of the second press bending unit enter the cycle after the initial cycle and start the cycle is taken as the starting moment, and the start and stop of the two load-bending rollers of the second press bending unit are cyclically switched according to the third cycle start and stop time interval and the fourth cycle start and stop time interval, so as to process the finished pipe.

[0076] It should be noted that if the first height difference is within the preset risk difference range, it means that the overall relative position deviation of the two bearing rollers of the first press bending unit is within the normal fluctuation range acceptable to the equipment; and at the same time, if the second height difference is less than the minimum value of the preset risk difference range, it means that the bearing rollers of the second press bending unit can operate normally; therefore, the two bearing rollers of the first press bending unit are no longer suitable for use as normal press bending working rollers. At this time, in order to optimize the pipe transmission process and ensure smooth subsequent processing, the two bearing rollers of the first press bending unit are marked as transmission rollers, which are transformed into auxiliary structures that assist the pipes to be smoothly and quickly transmitted to subsequent processing links.

[0077] The second start-stop information carrying the third cycle start-stop time interval and the fourth cycle start-stop time interval is sent to the two load-bending rollers of the second press bending unit. When the two load-bending rollers of the second press bending unit receive the first pipe to be processed in the same pipe group, the start-stop action is performed according to the third cycle start-stop time interval to accurately control the pause and start of the bending of the pipe; when the second pipe to be processed in the same pipe group is received, the start-stop action is performed according to the fourth cycle start-stop time interval.

[0078] Through the above-mentioned intermittent method, each pipe can be processed accordingly according to its own characteristics and processing requirements when passing through each processing link, and finally a finished pipe that meets the quality standards can be processed efficiently and stably.

[0079] In addition, calculating the third cycle start-stop time interval and the fourth cycle start-stop time interval of the two bearing rollers of the second press bending unit within the cycle period specifically includes the following steps: S601, based on the fifth distance between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment lengths of the first press bending unit and the second press bending unit, and the fourth distance between the first press bending unit and the second press bending unit, calculate the fourth transportation distance of the first pipe to be processed of the first pipe group conveyed by the conveying unit from the initial moment to the load-bending roller of the second press bending unit relatively far away from the conveying unit.

[0080] It should be noted that the fifth spacing is equal to the third spacing. Since the two are generated under different conditions, they are defined as different names.

[0081] The fourth transport distance mentioned above can be calculated according to the following formula: ; in, is the fourth transport distance, is the fifth spacing, Including the equipment length of the first bending unit and the equipment length of the second bending unit, The fourth spacing.

[0082] That is, the fourth transport distance refers to the distance from the first tube to be processed in a tube group transported by the conveying unit from the initial moment onwards, moving from the discharge end of the conveying unit to the carrying roller of the second bending unit relatively far away from the conveying unit.

[0083] S602: Calculate, according to the fourth transport distance and the feeding speed of the conveying unit, a fourth start-stop switching duration of the two bearing rollers of the second press bending unit in the initial cycle.

[0084] The fourth start-stop switching duration mentioned above can be calculated according to the following formula: ; in, is the fourth start-stop switching duration, is the feeding speed of the conveying unit.

[0085] That is, the fourth start-stop switching duration is the time required for the first tube to be processed of the first tube group to reach the carrying roller of the second bending unit relatively far away from the conveying unit when the tube moves at the feeding speed.

[0086] S603, based on the fifth distance between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment length of the first press bending unit and the second press bending unit, the fourth distance between the first press bending unit and the second press bending unit, the second distance between two pipes to be processed in the same pipe group, the first length of the pipe to be processed, the fourth start-stop switching time, the downward pressing time of the press bending structure and the feeding speed of the conveying unit, calculate the fifth transportation distance of the second pipe to be processed in the first pipe group conveyed by the conveying unit from the end time of the fourth start-stop switching time to the load-bending roller of the second press bending unit relatively far away from the conveying unit.

[0087] The fifth transport distance mentioned above can be calculated according to the following formula: ; in, is the fifth transport distance, is the fourth transport distance, is the second spacing, is the fourth start-stop switching duration, is the pressing time of the bending structure, is the feeding speed of the conveying unit.

[0088] When the second pipe to be processed in the first pipe group starts to move, the first pipe has already experienced the fourth start-stop switching time and the corresponding pressing time of the bending structure. During this period, the conveying unit operates normally at the feeding speed. Therefore, the starting position of the second pipe to be processed will change by a certain distance relative to the starting position of the first pipe to be processed in the same group. is the distance from the head end of the second pipe to be processed to the bearing roller of the second bending unit which is relatively far from the conveying unit, To indicate the distance traveled by the conveyor unit at the feeding speed during the total time of the fourth start-stop switching time and the pressing time of the bending structure. This distance is not counted in the actual transportation distance of the second pipe to be processed, so By subtracting this part, we can get the transportation distance of the second pipe to be processed, that is, the fifth transportation distance.

[0089] S604: Calculate the fifth start-stop switching duration of the two bearing rollers of the second press bending unit in the initial cycle according to the fifth transport distance and the feeding speed of the conveying unit.

[0090] The fifth start-stop switching duration mentioned above can be calculated according to the following formula: ; in, is the fifth start-stop switching duration, is the feeding speed of the conveying unit.

[0091] That is, the fifth start-stop switching time is the time required for the second tube to be processed of the first tube group to reach the carrying roller of the second bending unit relatively far away from the conveying unit when the second tube moves at the feeding speed.

[0092] S605. According to the fifth distance between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment length of the first press bending unit and the second press bending unit, the fourth distance between the first press bending unit and the second press bending unit, the second distance between two pipes to be processed in the same pipe group, the first length of the pipe to be processed, the fourth start-stop switching duration, the fifth start-stop switching duration, the downward pressing duration of the press-bending structure and the feeding speed of the conveying unit, calculate the sixth transportation distance of the first pipe to be processed in the second pipe group conveyed by the conveying unit after marking the two load-bending rollers of the first press bending unit as transmission rollers to the load-bending rollers of the second press bending unit relatively far away from the conveying unit.

[0093] The sixth transportation distance mentioned above can be calculated according to the following formula: ; in, is the sixth transport distance, is the fourth transport distance, is the second spacing, is the first spacing between two adjacent tube groups, is the fourth start-stop switching duration, is the fifth start-stop switching duration, is the pressing time of the bending structure, is the feeding speed of the conveying unit.

[0094] Similarly, the transportation distance of the first pipe to be processed in the second pipe group needs to take into account the corresponding start-stop switching time and bending time of the two pipes to be processed in the first pipe group, that is, the fourth start-stop switching time, the fifth start-stop switching time and the pressing time. During this time period, the conveying unit always runs at the feeding speed. At this time, the first pipe to be processed in the second pipe group is also moving synchronously, so this part is not considered; It indicates the distance that the first pipe to be processed in the second pipe group has traveled at the feeding speed during the aforementioned time period. By subtracting this part, the transportation distance of the first pipe to be processed in the second pipe group, that is, the sixth transportation distance, can be obtained.

[0095] S606: Calculate the sixth start-stop switching duration of the two bearing rollers of the second press bending unit in the initial cycle according to the sixth transportation distance and the feeding speed of the conveying unit.

[0096] The sixth start-stop switching duration mentioned above can be calculated according to the following formula: ; in, is the sixth start-stop switching duration, is the sixth transport distance, is the feeding speed of the conveying unit.

[0097] That is, the sixth start-stop switching duration is the time required for the first tube to be processed of the second tube group to reach the carrying roller of the second bending unit relatively far away from the conveying unit when the tube moves at the feeding speed.

[0098] S607, using the fifth start-stop switching duration as the third cyclic start-stop time interval of the two load-bearing rollers of the second press bending unit in the cycle period, and using the sixth start-stop switching duration as the fourth cyclic start-stop time interval of the two load-bending rollers of the second press bending unit in the cycle period.

[0099] It should be noted that the fifth start-stop switching duration is used as the third cycle start-stop time interval of the two bearing rollers of the second press bending unit in the cycle period, which includes the time required for the first pipe to be processed in the first pipe group to be processed from the first pause to accept the press bending process to the second pipe to be processed in the first pipe group to start pausing for preparation for processing, which is defined as the third cycle start-stop time interval, which can accurately reflect the time rhythm of the equipment operation during the processing of the first pipe to be processed in the same group. Similarly, the sixth start-stop switching duration is used as the fourth cycle start-stop time interval of the two bearing rollers of the second press bending unit in the cycle period, which includes the time period of processing the second pipe to be processed in the first pipe group and the transition period of the first pipe to be processed in the second group, which is defined as the fourth cycle start-stop time interval. These two cycle start-stop time intervals accurately regulate the processing rhythm of the pipe in the cold bending forming process from the time dimension, ensuring that the entire processing process is carried out efficiently and accurately according to the predetermined process requirements, and ultimately ensuring the quality and production efficiency of the finished pipes.

[0100] Furthermore, the method further comprises the following steps: When the first height difference is less than the minimum value of the preset risk difference range and the second height difference is greater than the minimum value of the preset risk difference range, the cyclic start and stop time interval of the first bending unit is adjusted so that it performs bending operations on the pipe to be processed, and at the same time the second bending unit is controlled to shut down and overhaul.

[0101] Among them, the first height difference is less than the minimum value of the preset risk difference range and the second height difference is greater than the minimum value of the preset risk difference range, which means that the first bending unit can normally transport the pipe to be processed and perform the bending operation, while the second bending unit has an abnormality and cannot process the pipe that meets the precision requirements. At this time, adjust the cycle start and stop time interval of the first bending unit to change the bending operation rhythm of the first bending unit on the pipe to be processed. At the same time, the second bending unit is shut down and repaired to reduce the negative impact of abnormal conditions on the entire processing flow.

[0102] Here, the calculation method for adjusting the cyclic start-stop time interval of the first press bending unit is similar to the calculation method of the first cyclic start-stop time interval mentioned above, and will not be described in detail here.

[0103] Furthermore, the method further comprises the following steps: When the first height difference is greater than the maximum value of the preset risk difference range, or when the first height difference is within the preset risk difference range and the second height difference is greater than the maximum value of the preset risk difference range, the first bending unit and the second bending unit are controlled to shut down and overhaul at the same time.

[0104] Among them, when the first height difference is greater than the maximum value of the preset risk difference range, it means that the first bending unit has a deviation that is significantly beyond the normal range, and it can neither perform the bending operation itself nor transfer the pipe to be processed to the second bending unit; when the first height difference is within the preset risk difference range and the second height difference is greater than the maximum value of the preset difference range, it means that the accuracy of the bending operation of the first bending unit is abnormal, but it does not affect its normal function of conveying pipes, and the second bending unit has a deviation that is significantly beyond the normal range, which affects the transfer and bending of the pipe to be processed. Based on these two situations, it is necessary to control the first bending unit and the second bending unit to be shut down and overhauled at the same time, so that the entire processing flow can be restored to a normal and orderly state as soon as possible.

[0105] Furthermore, the method further comprises the following steps: Transfer finished pipes to the testing area for testing; If the finished pipe passes the standard inspection structure of the inspection area, the current finished pipe is determined to be a qualified product and is pushed to the first storage area; if the finished pipe is intercepted by the standard inspection structure of the inspection area, the current finished pipe is determined to be an unqualified product and is pushed to the second storage area.

[0106] The criterion for judging whether the finished pipe is qualified is whether the finished pipe can pass the standard test structure. If it can pass, it is qualified, otherwise it is unqualified. Here, the first storage area is used to store qualified products, and the second storage area is used to store unqualified products. The finished pipes are classified and stored by testing to ensure product quality.

[0107] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A method for controlling the operation of a cold roll forming mechanism, characterized in that: Applicable to a cold bending forming mechanism, the cold bending forming mechanism comprises: a feeding assembly (1) and a bending assembly (5); the feeding assembly comprises a positioning unit (2) and a conveying unit (3), the positioning unit (2) being used to adjust the conveying direction of the pipe group so that the pipe group is input into the conveying unit (3) one by one, each of the pipe groups comprising two pipes to be processed (4) distributed along the conveying direction; the conveying unit (3) being used to transmit the pipes to be processed (4) whose directions have been adjusted; the bending assembly (5) comprising: a first bending unit (6) and a second bending unit (7) arranged along the conveying direction of the feeding assembly (1), the first bending unit (6) and the second bending unit (7) both having two supporting rollers (8) and a bending structure (9) for use in combination, the two supporting rollers (8) being used to convey and / or receive the pipes to be processed (4), the bending structure (9) being used to perform bending operations on the pipes to be processed (4) carried by the first bending unit (6) or the second bending unit (7) that cooperate with it; The method comprises the following steps: When the use time of the first press bending unit reaches a preset working threshold, obtaining a first height difference between two bearing rollers of the first press bending unit and a second height difference between two bearing rollers of the second press bending unit; If the first height difference and the second height difference are both within the preset risk difference range, a third height difference is calculated according to the height values ​​of two mutually adjacent bearing rollers of the first bending unit and the second bending unit; If the third height difference is less than the minimum value of the preset risk difference range, the two bearing rollers close to each other are marked as working rollers, the other bearing roller of the second press bending unit is stopped, and the other bearing roller of the first press bending unit is marked as an auxiliary roller; The time when the next tube group arrives at the discharge end of the conveying unit is taken as the initial time, and the first cycle start-stop time interval and the second cycle start-stop time interval of the working roller in the cycle period are calculated according to the feeding speed of the conveying unit, the pressing time length of the bending structure, the first length of the tube to be processed, the first spacing between two adjacent tube groups, the second spacing between two tubes to be processed in the same tube group, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the equipment length of the first bending unit and the second bending unit and the fourth spacing between the two; the first cycle start-stop time interval is the time period from the first pause of the first tube to be processed in the same tube group to accept the bending process to the second tube to be processed in the same tube group to start to pause and prepare for the bending process; the second cycle start-stop time interval is the sum of the time period of the second tube to be processed in the same tube group to accept the bending process and the transition time period from the end of the bending process of the current tube to be processed to the first tube to be processed in the next tube group to enter the processing preparation stage; The moment when the working roll enters the cycle after the initial cycle and starts the cycle is taken as the starting moment, and the start and stop of the working roll are cyclically switched in accordance with the first cycle start and stop time interval and the second cycle start and stop time interval, so as to process the finished pipe.

2. The operation control method of a cold roll forming mechanism according to claim 1, characterized in that: Calculating a first cycle start-stop time interval and a second cycle start-stop time interval of the working roll within a cycle period specifically comprises the following steps: According to the third distance between the discharge end of the conveying unit and the auxiliary roller, the equipment length of the first bending unit, and the fourth distance between the first bending unit and the second bending unit, a first transport distance from the initial moment when the first tube to be processed of the first tube group conveyed by the conveying unit is transferred to the working roller relatively far away from the conveying unit is calculated; Calculating a first start-stop switching duration of the working roll in an initial cycle according to the first transport distance and the feeding speed of the conveying unit; According to the second spacing between two to-be-processed tubes in the same tube group, the first length of the to-be-processed tubes, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the first start-stop switching time, the pressing time of the bending structure and the feeding speed of the conveying unit, a second transport distance of the second to-be-processed tube of the first tube group conveyed by the conveying unit from the end time of the first start-stop switching time to the working roller relatively far away from the conveying unit is calculated; Calculating a second start-stop switching duration of the working roll in the initial cycle according to the feeding speed of the conveying unit and the second transport distance; According to the first spacing between two adjacent tube groups, the first length of the tube to be processed, the second spacing between two tubes to be processed in the same tube group, the third spacing between the discharge end of the conveying unit and the auxiliary roller, the equipment lengths of the first bending unit and the second bending unit and the fourth spacing therebetween, the pressing time of the bending structure, the first start-stop switching time, the second start-stop switching time and the feeding speed of the conveying unit, a third transport distance of the first tube to be processed of the second tube group conveyed by the conveying unit from the end time of the second start-stop switching time to the working roller relatively far away from the conveying unit is calculated; Calculating a third start-stop switching duration of the working roller in the initial cycle according to the third transport distance and the feeding speed of the conveying unit; The second start-stop switching duration is used as the first cyclic start-stop time interval of the working roll in the cycle period, and the third start-stop switching duration is used as the second cyclic start-stop time interval of the working roll in the cycle period.

3. The operation control method of a cold roll forming mechanism according to claim 1, characterized in that: The method further comprises the following steps: If the first height difference is within the preset risk difference range and the second height difference is less than the minimum value of the preset risk difference range, marking the two bearing rollers of the first bending unit as transmission rollers; The moment when the next tube group arrives at the discharge end of the conveying unit is taken as the initial moment, and the third cycle start-stop time interval and the fourth cycle start-stop time interval of the two bearing rollers of the second press-bending unit in the cycle period are calculated according to the feeding speed of the conveying unit, the pressing time length of the press-bending structure, the first length of the tube to be processed, the first spacing between two adjacent tube groups, the second spacing between two tubes to be processed in the same tube group, the fifth spacing between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment lengths of the first press-bending unit and the second press-bending unit and the fourth spacing therebetween; the third cycle start-stop time interval is when the first height difference is at When the first height difference is within the preset risk difference range and the second height difference is less than the minimum value of the preset risk difference range, the time period from when the first pipe to be processed in the same pipe group stops for the first time to be processed by press bending to when the second pipe to be processed in the same pipe group stops for preparation for press bending; the fourth cycle start-stop time interval is when the first height difference is within the preset risk difference range and the second height difference is less than the minimum value of the preset risk difference range, the time period for when the second pipe to be processed in the same pipe group receives press bending, and the transition time period from when the press bending process for the current pipe to be processed is completed to when the first pipe to be processed in the next pipe group starts to enter the processing preparation stage; The moment when the two load-bearing rollers of the second press bending unit enter the cycle after the initial cycle and start the cycle is taken as the starting moment, and the start and stop of the two load-bending rollers of the second press bending unit are cyclically switched according to the third cycle start and stop time interval and the fourth cycle start and stop time interval, so as to process the finished pipe.

4. The operation control method of a cold roll forming mechanism according to claim 3, characterized in that: Calculating a third cycle start-stop time interval and a fourth cycle start-stop time interval of two load-bearing rollers of the second press bending unit within a cycle period specifically includes the following steps: A fourth transport distance of the first tube to be processed of the first tube group transported by the transport unit from the initial moment to the bearing roller of the second bending unit relatively far from the transport unit is calculated based on a fifth distance between the discharge end of the transport unit and the transmission roller relatively close to the transport unit, the equipment lengths of the first bending unit and the second bending unit, and a fourth distance between the first bending unit and the second bending unit; According to the fourth transport distance and the feeding speed of the conveying unit, a fourth start-stop switching duration of the two bearing rollers of the second bending unit in the initial cycle is calculated; According to the fifth distance between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment length of the first bending unit and the second bending unit, the fourth distance between the first bending unit and the second bending unit, the second distance between two to-be-processed tubes in the same tube group, the first length of the tube to be processed, the fourth start-stop switching time, the pressing time of the bending structure and the feeding speed of the conveying unit, a fifth transport distance of the second tube to be processed of the first tube group conveyed by the conveying unit from the end time of the fourth start-stop switching time to the bearing roller of the second bending unit relatively far away from the conveying unit is calculated; According to the fifth transport distance and the feeding speed of the conveying unit, a fifth start-stop switching duration of the two bearing rollers of the second bending unit in the initial cycle is calculated; According to the fifth distance between the discharge end of the conveying unit and the transmission roller relatively close to the conveying unit, the equipment length of the first bending unit and the second bending unit, the fourth distance between the first bending unit and the second bending unit, the second distance between two to-be-processed pipes in the same pipe group, the first length of the to-be-processed pipes, the fourth start-stop switching time, the fifth start-stop switching time, the pressing time of the bending structure and the feeding speed of the conveying unit, a sixth transport distance of the first to-be-processed pipe of the second pipe group conveyed by the conveying unit to the bearing roller relatively far away from the conveying unit is calculated; According to the sixth transport distance and the feeding speed of the conveying unit, a sixth start-stop switching duration of the two bearing rollers of the second bending unit in the initial cycle is calculated; The fifth start-stop switching duration is used as the third cyclic start-stop time interval of the two load-bearing rollers of the second press bending unit within the cycle period, and the sixth start-stop switching duration is used as the fourth cyclic start-stop time interval of the two load-bending rollers of the second press bending unit within the cycle period.

5. The operation control method of a cold roll forming mechanism according to claim 1, characterized in that: The method further comprises the following steps: When the first height difference is smaller than the minimum value of the preset risk difference range and the second height difference is larger than the minimum value of the preset risk difference range, the cyclic start and stop time interval of the first press bending unit is adjusted so that it performs a press bending operation on the pipe to be processed, and at the same time the second press bending unit is controlled to shut down and overhaul.

6. The operation control method of a cold roll forming mechanism according to claim 1, characterized in that: The method further comprises the following steps: When the first height difference is greater than the maximum value of the preset risk difference range, or when the first height difference is within the preset risk difference range and the second height difference is greater than the maximum value of the preset risk difference range, the first press bending unit and the second press bending unit are controlled to shut down and overhaul at the same time.

7. The operation control method of a cold roll forming mechanism according to claim 1, characterized in that: The method further comprises the following steps: transporting the finished pipe to a testing area for testing; If the finished pipe passes the standard inspection structure of the inspection area, the current finished pipe is determined to be a qualified product and is pushed to the first storage area; if the finished pipe is intercepted by the standard inspection structure of the inspection area, the current finished pipe is determined to be an unqualified product and is pushed to the second storage area.

8. A roll forming mechanism, used to implement the operation control method of a roll forming mechanism according to any one of claims 1 to 7, characterized in that: The institutions include: A feeding assembly (1), the feeding assembly (1) comprising a positioning unit (2) and a conveying unit (3), the positioning unit (2) being used to adjust the conveying direction of a tube group so that the tube groups are input into the conveying unit (3) one by one, each of the tube groups comprising two tubes to be processed (4) distributed along the conveying direction; the conveying unit (3) being used to convey the tubes to be processed (4) whose directions have been adjusted; A bending assembly (5), the bending assembly (5) comprising: a first bending unit (6) and a second bending unit (7) arranged along the conveying direction of the feeding assembly (1), the first bending unit (6) and the second bending unit (7) each having two supporting rollers (8) and a bending structure (9) for use together, the two supporting rollers (8) being used to convey and / or receive the pipe to be processed (4), the bending structure (9) being used to perform a bending operation on the pipe to be processed (4) carried by the first bending unit (6) or the second bending unit (7) that cooperates therewith; A control unit (10), the control unit (10) being communicatively connected to the feeding assembly (1) and the bending assembly (5), and being used to control corresponding assemblies to perform corresponding actions.

9. A cold roll forming mechanism according to claim 8, characterized in that: The mechanism further comprises: a standard detection structure arranged in the detection area (11); The standard detection structure includes: A detection body (12), wherein the detection body (12) is hollow inside to form a bearing chamber, the bearing chamber is in communication with the first storage area (17), and the detection body (12) and the second storage area (18) are arranged adjacent to each other; an opening is provided at the top of the detection body (12), and the opening is used to install standard detection frames (13) of different specifications; a protective pad (14) is provided at the bottom of the bearing chamber to receive finished pipes that are judged to be qualified products; a first pushing unit, the first pushing unit being arranged in the bearing chamber; the first pushing unit having a first pushing portion for sending the finished pipe material judged as a qualified product into the first storage area (17); A second pushing unit is arranged at the top of the detection body (12) and adjacent to the opening; the second pushing unit has a second pushing portion, which is used to send the finished pipes judged as unqualified products into the second storage area (18).

10. A cold roll forming mechanism according to claim 8, characterized in that: The bending structure (9) comprises: A mounting base (19), wherein a first bending member (20), a second bending member (21), and a third bending member (22) are evenly distributed on the mounting base (19), wherein a bending angle of the first bending member (20) is greater than a bending angle of the second bending member (21), and a bending angle of the second bending member (21) is greater than a bending angle of the third bending member (22); The first bending member (20) is provided with a first groove, and a first auxiliary member (15) is rotatably connected in the first groove, and the bending angle of the first auxiliary member (15) is the same as the bending angle of the second bending member (21); The second bending member (21) is provided with a second groove, and a second auxiliary member (16) is rotatably connected in the second groove, and the bending angle of the second auxiliary member (16) is the same as the bending angle of the third bending member (22); The target bending angle is formed by splicing bending parts and auxiliary parts with the same bending angle, so that the bending structure (9) can perform bending operations on the pipes (4) to be processed with different angle requirements.

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